Yokogawa PR300 Power and Energy Meter - Manual (Page 94)

<Toc> <Ind> <5. Modbus/RTU and ASCII Communication Protocols>
5-15
IM 77C01E01-10E
●
Example (ASCII mode)
Write 10 into a series of four D registers starting with the D0201 (VT ratio and CT ratio) at
station number 11.
[Message]
[:]0B1000C800004120000041204F[CR][LF]
“0B”: station number 11, “10”: function code 16, “00C8”: D register start number 201,
“0004”: number of D registers 4, “08”: byte count (number of D registers
×
2), “0000”: VT
ratio lower two bytes, “4120”: VT ratio upper two bytes, “0000”: CT ratio lower two bytes,
“4120”: CT ratio upper two bytes and “4F”: error check
* Numbers in quotation marks are hexadecimal.
The following response will be returned to the message above.
[Response]
[:]0B1000C8000419[CR][LF]
Write 1 into the D0207(setup change status) to activate the writing into the VT ratio and CT
ratio.
[:]0B0600CE000120[CR][LF]
“0B”: station number 11, “06”: function code 06, “00CE”: D register start number 207,
“0001”: writing data 0001, and “20”: error check
* Numbers in quotation marks are hexadecimal.